First commit
Translated asdoc comments and added new ones
Remove everything about Database

That Stage's analog was useless, so i removed:
- Database class
- DataObject.database parameter
- DatabaseEvent.ADDED_TO_DATABASE and
DatabaseEvent.REMOVED_FROM_DATABASE event types
- Every use of them

Plus i renamed DatabaseEvent class to DataListEvent
Remove commented and unused code

Remove DataListEvent.CHANGE
Fix asdoc for events in DataObject class
Change DataListEvent const values

To differ from Event class types
Add underline to private variables

To unify codestyle
Remove cloneDatabase() method from DataListEvent class

There are clone() method already